Here's one for ya. I'm told this actually happened. Fla cops put a big sign up just inside the northern border, designed to be read by south-bound traffic coming into Florida. Sign says: "Drug Inspection Station Ahead - Prepare to Stop." The sign is just in front of a big curve in the road.
There isn't any drug inspection station. What here IS, however, is a big, old police car waiting behind some bushes, watching for cars coming down the highway that read the sign and then make an (illegal) U-turn. When that happens, they pull them over.
When a car makes a U-turn to avoid a "drug inspection station," is that PC to search the car? I think it should be, don't you?
Pretty clever, hey?